Internet Version for Reference Only
BRADFORD WHITE
Page 22
Copper Brute B4 Volume Water Heaters Page 23
Electronic Pilot Standing Pilot
Figure 31. Flame patterns.
SECTION 4.
Maintenance
4.1 General Instructions
1. Oil the water circulating pump in accordance
with the manufacturer's instructions.
2. If a strainer is used in a pressure reducing valve
or in the piping, clean it every 6 months in
accordance with the manufacturer's instructions.
3. At startup and every 6 months after, look at
the pilot and main burner ame (see Figure
31). If the ame has the appearance of sooting
tips, check for debris near orices. Call service
technician.
4. Inspect the venting system for blockage, leakage,
and corrosion at least once a year.
5. Keep the heater area clear of combustible
material, gasoline, and other ammable liquids
and vapors.
6. Be sure all combustion air and ventilation
openings are not blocked.
7. Check for black carbon soot buildup on the
external surfaces of the heat exchanger every 6
months.
8. Do not use the heater if any part has been under
water. Replace any part of the control system and
any gas control which has been under water.
NOTE: After installation and rst startup, check
the heat exchanger for black carbon soot buildup after
the following periods of operation: 24 hours, 7 days,
30 days, 90 days, and once every 6 months thereafter.
4.2 Replacement of Gas Controls
The gas and electric controls installed on the
heaters are designed for both dependable operation and
long life. Safe operation of the heater depends on their
proper functioning.
NOTE: The warranty does not cover damage
caused by lack of required maintenance or improper
operating practices.
WARNING
Never attempt to repair the gas valve. Such
attempts will void the warranty, and could lead to
dangerous results.
If the gas valve is found to be defective, replace
it by following these instructions.
1. Turn off electrical power to the heater.
2. Turn off the main gas supply at the manual gas
cock outside the heater jacket or at the meter.
3. Remove the front access door on the heater.
4. Disconnect the service union in the gas line, and
unscrew the main gas pipe from the gas valve
(see Figure 32).
5. Remove the two screws that fastens the anti-
rotation bracket on the left side of the gas valve
(see Figure 32), and the three screws attached to
heater.
6. Remove the pilot gas tube and copper
thermocouple shield, if present, from the gas
valve.
Caution
Label all wires prior to disconnection. Wiring errors
can cause improper and dangerous operation.
7. Tag and remove all wires from the gas valve
terminals.
8. Pull the burner tray out of the heater (see
Figure 32).
9. Screw the new gas valve onto the manifold pipe.
Make sure the arrow on the bottom of the gas
valve that indicates the direction of gas ow is
in the proper direction. Also make sure the brass
tting is on the right side.
10. Connect the pilot gas tube to the pilot assembly
and thermocouple to the gas valve.